JustNile 14" X 28" Creative Pebbles Non-Slip Safety Bath Mat for Inside Bathtub/Showers - Black pvc Pebbles alike design features small suction caps on the bottom prevent from slipping. Measures 28 X 14, made from high quality PVC for long-term use. Soft, non-slip texture on the surface designed for easy standing when showering Holes in between the mat for water to go through and prevent mildew formation, highly sanitized To enhance the suctioning, spill some water on the suction caps and stick on the tub/tile floor for better suctioning.